It appears maybe this happened to no one else, but if some poor soul that it did happen to comes across this, I got it to unlock today. What I did was play the first challenge. After the challenge it takes you to the leaderboard. I hit friends and it didn't unlock. So I was starting to get frustrated with it, so I started to repeatedly hit Y for friends. It just kept flasing "busy". Well it was flashing busy I hit X for You and pop went the achievement.